The DH-III slip detector is the main part for stopping a belt conveyor from failing. When a belt slips, you get big piles of material, belt damage, and broken machines. This DH-III slip detector touches the drum to watch the speed. If the speed drops, it sends an alarm. Where you put it and how you bolt it down decides if the reading is good. You also have to set the “alarm point” to fit your job. If you do it right, the detector will save your equipment from a lot of trouble.
1. Picking the Best Spot: Getting a Clean Signal
You have to find a spot where the speed is steady and nothing gets in the way. The drive drum is the best place. This is where the power moves the belt conveyor, so the speed is solid and doesn’t bounce around like other rollers.
Don’t put the DH-III slip detector on bend rollers or tension rollers. The speed there changes too much when the belt gets tight or loose, and that gives you a bad reading. If your belt conveyor is in a mine or a dusty area, the spot you pick matters even more. We sell the DH-III slip detector and can tell you exactly where it should go for your specific machine.
Stay away from spots where rocks fall or dust builds up. A falling rock will break the probe, and thick dust stops it from touching the drum. Also, keep it out of very hot or wet areas. Make sure a worker can reach it easily to clean the probe and check the wires later on.
2. How to Install: Keeping the Probe Tight
The probe has to stay in contact with the drum surface all the time. When you install it, set the pressure so it touches the metal but doesn’t get crushed. Too much pressure wears the probe out fast. Too little pressure makes it jump off the drum when the machine vibrates.
Use a heavy, stiff bracket for the DH-III slip detector. Weld it or use big bolts to lock it to the belt conveyor frame. If it shakes, the data is useless. Use good steel that won’t rust if the machine is outside.
The probe must be at a 90-degree angle to the drum. If it’s tilted, the speed reading will be wrong. After you tighten everything, shake the bracket. If it moves, fix it. Also, put the wires inside a pipe. You don’t want the moving belt or a sharp edge cutting the power line.
3. Setting the Alarm: Getting the Threshold Right
Before you start, check the “normal speed” on the belt conveyor nameplate. Use that number to start, but you must adjust it for your real work so you don’t get fake alarms all day.
Run the belt conveyor with no load first. Once it’s up to speed, look at the DH-III slip detector screen. Do this a few times and find the average speed. This is your “Base Speed.”
Now, set the alarm point. Usually, you set it at 80% or 90% of the normal speed. For a belt conveyor carrying a very heavy load, you might set it a bit lower so it’s more sensitive. Test it with a full load. If it alarms for no reason, turn the setting up a bit. If the belt slips and nothing happens, turn it down. We can help you find the perfect setting on-site.
4. Checking Your Work: Testing the System
After you finish the setup, check everything again. Spin the drum and see if the DH-III slip detector shows the numbers without skipping. It should look smooth.
Try to make the alarm go off. You can do this by safely changing the tension or watching it during a big start. Make sure the signal actually gets to the control room. You should check these numbers every few months. Belts stretch and drums wear down, so the “Base Speed” might change over time.
5. Installation Mistakes to Avoid
Never put the probe directly on the belt to check speed. The belt is too rough and dirty, and it will kill the probe fast.
Don’t use “homemade” brackets that aren’t strong enough. The DH-III slip detector needs its own special mounting parts to work right. We carry all the original parts so it fits perfectly. Also, don’t set the alarm point too high or too low. Too high means it won’t save you in time. Too low means it stops production for no reason.
Conclusion: Do it Right to Stay Safe
Getting your DH-III slip detector ready is about finding the right spot, bolting it down hard, and picking the right speed setting. If you do these things, your belt conveyor will be protected from bad slips.
Need an original DH-III slip detector, mounting kits, or help with your settings? Get in touch with us. We have the best detectors and the tech support to keep your belt conveyor running safe and steady.
E-mail: sales@yoyik.com
Tel: +86-838-2226655
Whatsapp: +86-13618105229
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Post time: Jan-28-2026
